15420523460402 has 16 divisors (see below), whose sum is σ = 23355326745792. Its totient is φ = 7635466187280.

The previous prime is 15420523460401. The next prime is 15420523460431. The reversal of 15420523460402 is 20406432502451.

It is not an unprimeable number, because it can be changed into a prime (15420523460401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12311813 + ... + 13506360.

It is an arithmetic number, because the mean of its divisors is an integer number (1459707921612).

Almost surely, 2^{15420523460402} is an apocalyptic number.

15420523460402 is a deficient number, since it is larger than the sum of its proper divisors (7934803285390).

15420523460402 is a wasteful number, since it uses less digits than its factorization.

15420523460402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25821073.

The product of its (nonzero) digits is 230400, while the sum is 38.

Adding to 15420523460402 its reverse (20406432502451), we get a palindrome (35826955962853).

The spelling of 15420523460402 in words is "fifteen trillion, four hundred twenty billion, five hundred twenty-three million, four hundred sixty thousand, four hundred two".