15542620402 has 16 divisors (see below), whose sum is σ = 23409311040. Its totient is φ = 7739538768.

The previous prime is 15542620393. The next prime is 15542620439. The reversal of 15542620402 is 20402624551.

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, 2809363 + ... + 2814889.

It is an arithmetic number, because the mean of its divisors is an integer number (1463081940).

Almost surely, 2^15542620402 is an apocalyptic number.

15542620402 is a deficient number, since it is larger than the sum of its proper divisors (7866690638).

15542620402 is a wasteful number, since it uses less digits than its factorization.

15542620402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11025.

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 15542620402 in words is "fifteen billion, five hundred forty-two million, six hundred twenty thousand, four hundred two".