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13621653426 = 234639489389
BaseRepresentation
bin11001010111110100…
…11110111110110010
31022011022112200122110
430223322132332302
5210344120402201
610131355150150
7661362100203
oct145372367662
938138480573
1013621653426
115860082917
122781a45356
13139110c474
1493314b5aa
1554acea6d6
hex32be9efb2

13621653426 has 16 divisors (see below), whose sum is σ = 27249235200. Its totient is φ = 4539563088.

The previous prime is 13621653407. The next prime is 13621653431. The reversal of 13621653426 is 62435612631.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216861 + ... + 272528.

It is an arithmetic number, because the mean of its divisors is an integer number (1703077200).

Almost surely, 213621653426 is an apocalyptic number.

13621653426 is an abundant number, since it is smaller than the sum of its proper divisors (13627581774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13621653426 is a wasteful number, since it uses less digits than its factorization.

13621653426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494033.

The product of its digits is 155520, while the sum is 39.

The spelling of 13621653426 in words is "thirteen billion, six hundred twenty-one million, six hundred fifty-three thousand, four hundred twenty-six".

Divisors: 1 2 3 6 4639 9278 13917 27834 489389 978778 1468167 2936334 2270275571 4540551142 6810826713 13621653426