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38357630997 = 3715725146351
BaseRepresentation
bin100011101110010010…
…110000000000010101
310200000012122112202220
4203232102300000111
51112024023142442
625342105052553
72525352324660
oct435622600025
9120005575686
1038357630997
11152a3978994
127525a87159
133803a3389a
141bdc4086d7
15ee7718eec
hex8ee4b0015

38357630997 has 32 divisors (see below), whose sum is σ = 59057639424. Its totient is φ = 21691800000.

The previous prime is 38357630989. The next prime is 38357631017. The reversal of 38357630997 is 79903675383.

It is not a de Polignac number, because 38357630997 - 23 = 38357630989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38357630997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38357630917) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 804372 + ... + 850722.

It is an arithmetic number, because the mean of its divisors is an integer number (1845551232).

Almost surely, 238357630997 is an apocalyptic number.

It is an amenable number.

38357630997 is a deficient number, since it is larger than the sum of its proper divisors (20700008427).

38357630997 is a wasteful number, since it uses less digits than its factorization.

38357630997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46769.

The product of its (nonzero) digits is 25719120, while the sum is 60.

The spelling of 38357630997 in words is "thirty-eight billion, three hundred fifty-seven million, six hundred thirty thousand, nine hundred ninety-seven".

Divisors: 1 3 7 21 157 251 471 753 1099 1757 3297 5271 39407 46351 118221 139053 275849 324457 827547 973371 7277107 11634101 21831321 34902303 50939749 81438707 152819247 244316121 1826553857 5479661571 12785876999 38357630997