2615478155536 has 75 divisors (see below), whose sum is σ = 5388054551571. Its totient is φ = 1229933468928.

The previous prime is 2615478155473. The next prime is 2615478155561. The reversal of 2615478155536 is 6355518745162.

The square root of 2615478155536 is 1617244.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 811721713936 + 1803756441600 = 900956^2 + 1343040^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1869533365 + ... + 1869534763.

Almost surely, 2^{2615478155536} is an apocalyptic number.

2615478155536 is the 1617244-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2615478155536

2615478155536 is an abundant number, since it is smaller than the sum of its proper divisors (2772576396035).

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

2615478155536 is an frugal number, since it uses more digits than its factorization.

2615478155536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2874 (or 1418 counting only the distinct ones).

The product of its digits is 30240000, while the sum is 58.

The spelling of 2615478155536 in words is "two trillion, six hundred fifteen billion, four hundred seventy-eight million, one hundred fifty-five thousand, five hundred thirty-six".