15201661426 has 64 divisors (see below), whose sum is σ = 28028436480. Its totient is φ = 6035477760.

The previous prime is 15201661421. The next prime is 15201661441. The reversal of 15201661426 is 62416610251.

It is a super-2 number, since 2×15201661426² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 15201661391 and 15201661400.

It is not an unprimeable number, because it can be changed into a prime (15201661421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7200111 + ... + 7202221.

It is an arithmetic number, because the mean of its divisors is an integer number (437944320).

Almost surely, 2^15201661426 is an apocalyptic number.

15201661426 is a deficient number, since it is larger than the sum of its proper divisors (12826775054).

15201661426 is a wasteful number, since it uses less digits than its factorization.

15201661426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2599.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 15201661426 in words is "fifteen billion, two hundred one million, six hundred sixty-one thousand, four hundred twenty-six".