1535972872455 has 320 divisors, whose sum is σ = 3292302993408. Its totient is φ = 670625879040.

The previous prime is 1535972872433. The next prime is 1535972872471. The reversal of 1535972872455 is 5542782795351.

1535972872455 is a `hidden beast` number, since 1 + 5 + 3 + 5 + 97 + 28 + 72 + 455 = 666.

It is not a de Polignac number, because 1535972872455 - 2¹² = 1535972868359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 1535972872392 and 1535972872401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 944051352 + ... + 944052978.

Almost surely, 2^{1535972872455} is an apocalyptic number.

1535972872455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1535972872455 is an abundant number, since it is smaller than the sum of its proper divisors (1756330120953).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1535972872455 is a wasteful number, since it uses less digits than its factorization.

1535972872455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868 (or 1859 counting only the distinct ones).

The product of its digits is 105840000, while the sum is 63.

The spelling of 1535972872455 in words is "one trillion, five hundred thirty-five billion, nine hundred seventy-two million, eight hundred seventy-two thousand, four hundred fifty-five".