15195962881 has 16 divisors (see below), whose sum is σ = 17529555456. Its totient is φ = 13042800000.

The previous prime is 15195962843. The next prime is 15195962921. The reversal of 15195962881 is 18826959151.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 15195962881 - 2²⁹ = 14659091969 is a prime.

It is a super-2 number, since 2×15195962881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15195962381) 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, 529470 + ... + 557431.

It is an arithmetic number, because the mean of its divisors is an integer number (1095597216).

Almost surely, 2^15195962881 is an apocalyptic number.

15195962881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15195962881 is a deficient number, since it is larger than the sum of its proper divisors (2333592575).

15195962881 is a wasteful number, since it uses less digits than its factorization.

15195962881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086984.

The product of its digits is 1555200, while the sum is 55.

It can be divided in two parts, 151959 and 62881, that added together give a triangular number (214840 = T₆₅₅).

The spelling of 15195962881 in words is "fifteen billion, one hundred ninety-five million, nine hundred sixty-two thousand, eight hundred eighty-one".