1615135506420 has 24 divisors (see below), whose sum is σ = 4522379418144. Its totient is φ = 430702801696.

The previous prime is 1615135506389. The next prime is 1615135506431. The reversal of 1615135506420 is 246055315161.

It is a super-2 number, since 2×1615135506420² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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, 13459462494 + ... + 13459462613.

It is an arithmetic number, because the mean of its divisors is an integer number (188432475756).

Almost surely, 2^{1615135506420} is an apocalyptic number.

1615135506420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1615135506420 is an abundant number, since it is smaller than the sum of its proper divisors (2907243911724).

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

1615135506420 is a wasteful number, since it uses less digits than its factorization.

1615135506420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26918925119 (or 26918925117 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 1615135506420 in words is "one trillion, six hundred fifteen billion, one hundred thirty-five million, five hundred six thousand, four hundred twenty".