15551162690 has 16 divisors (see below), whose sum is σ = 31990963392. Its totient is φ = 5331827184.

The previous prime is 15551162651. The next prime is 15551162699. The reversal of 15551162690 is 9626115551.

It is a super-2 number, since 2×15551162690² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15551162699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111079664 + ... + 111079803.

It is an arithmetic number, because the mean of its divisors is an integer number (1999435212).

Almost surely, 2^15551162690 is an apocalyptic number.

15551162690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15551162690 is an abundant number, since it is smaller than the sum of its proper divisors (16439800702).

15551162690 is a wasteful number, since it uses less digits than its factorization.

15551162690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222159481.

The product of its (nonzero) digits is 81000, while the sum is 41.

The spelling of 15551162690 in words is "fifteen billion, five hundred fifty-one million, one hundred sixty-two thousand, six hundred ninety".