15420255202451 has 16 divisors (see below), whose sum is σ = 17151052907520. Its totient is φ = 13744640289120.

The previous prime is 15420255202433. The next prime is 15420255202453.

15420255202451 is nontrivially palindromic in base 10.

15420255202451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 15420255202451 - 2¹⁰ = 15420255201427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15420255202453) 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, 8053091 + ... + 9782268.

It is an arithmetic number, because the mean of its divisors is an integer number (1071940806720).

Almost surely, 2^{15420255202451} is an apocalyptic number.

15420255202451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15420255202451 is a deficient number, since it is larger than the sum of its proper divisors (1730797705069).

15420255202451 is a wasteful number, since it uses less digits than its factorization.

15420255202451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17836906.

The product of its (nonzero) digits is 160000, while the sum is 38.

It can be divided in two parts, 1542025 and 5202451, that added together give a palindrome (6744476).

The spelling of 15420255202451 in words is "fifteen trillion, four hundred twenty billion, two hundred fifty-five million, two hundred two thousand, four hundred fifty-one".