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13139807902 = 213505377227
BaseRepresentation
bin11000011110011000…
…11000111010011110
31020220201212101211221
430033030120322132
5203402242323102
610011503403554
7643421344564
oct141714307236
936821771757
1013139807902
115633096181
1226685b35ba
131315342780
148c915da34
1551d86b637
hex30f318e9e

13139807902 has 8 divisors (see below), whose sum is σ = 21225843576. Its totient is φ = 6064526712.

The previous prime is 13139807893. The next prime is 13139807927. The reversal of 13139807902 is 20970893131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252688588 + ... + 252688639.

It is an arithmetic number, because the mean of its divisors is an integer number (2653230447).

Almost surely, 213139807902 is an apocalyptic number.

13139807902 is a deficient number, since it is larger than the sum of its proper divisors (8086035674).

13139807902 is a wasteful number, since it uses less digits than its factorization.

13139807902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505377242.

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 13139807902 in words is "thirteen billion, one hundred thirty-nine million, eight hundred seven thousand, nine hundred two".

Divisors: 1 2 13 26 505377227 1010754454 6569903951 13139807902