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13137271951 = 1723151222511
BaseRepresentation
bin11000011110000101…
…01101110010001111
31020220120002120011211
430033002231302033
5203401120200301
610011333155251
7643360653256
oct141702556217
936816076154
1013137271951
115631713951
12266778bb27
1313149653cb
148c8a9d79d
1551d51a051
hex30f0adc8f

13137271951 has 16 divisors (see below), whose sum is σ = 14611027968. Its totient is φ = 11748528000.

The previous prime is 13137271943. The next prime is 13137271967. The reversal of 13137271951 is 15917273131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13137271951 - 23 = 13137271943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13137271051) 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, 52215 + ... + 170296.

It is an arithmetic number, because the mean of its divisors is an integer number (913189248).

Almost surely, 213137271951 is an apocalyptic number.

13137271951 is a deficient number, since it is larger than the sum of its proper divisors (1473756017).

13137271951 is a wasteful number, since it uses less digits than its factorization.

13137271951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222702.

The product of its digits is 39690, while the sum is 40.

The spelling of 13137271951 in words is "thirteen billion, one hundred thirty-seven million, two hundred seventy-one thousand, nine hundred fifty-one".

Divisors: 1 17 23 151 391 2567 3473 59041 222511 3782687 5117753 33599161 87001801 571185737 772780703 13137271951