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38635017145 = 5191313104461
BaseRepresentation
bin100011111110110100…
…111001001110111001
310200201112121020000221
4203332310321032321
51113111031022040
625425414300041
72535261140644
oct437664711671
9120645536027
1038635017145
111542650723a
1275a2957621
1338493445ba
141c271b2a5b
151011c5c74a
hex8fed393b9

38635017145 has 16 divisors (see below), whose sum is σ = 49174678080. Its totient is φ = 29057745600.

The previous prime is 38635017143. The next prime is 38635017151. The reversal of 38635017145 is 54171053683.

It is not a de Polignac number, because 38635017145 - 21 = 38635017143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38635017143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1539786 + ... + 1564675.

It is an arithmetic number, because the mean of its divisors is an integer number (3073417380).

Almost surely, 238635017145 is an apocalyptic number.

It is an amenable number.

38635017145 is a deficient number, since it is larger than the sum of its proper divisors (10539660935).

38635017145 is a wasteful number, since it uses less digits than its factorization.

38635017145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3104616.

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 38635017145 in words is "thirty-eight billion, six hundred thirty-five million, seventeen thousand, one hundred forty-five".

Divisors: 1 5 19 95 131 655 2489 12445 3104461 15522305 58984759 294923795 406684391 2033421955 7727003429 38635017145