1020655715155 has 16 divisors (see below), whose sum is σ = 1232143073568. Its totient is φ = 811632960000.

The previous prime is 1020655715141. The next prime is 1020655715257. The reversal of 1020655715155 is 5515175560201.

It is not a de Polignac number, because 1020655715155 - 2⁹ = 1020655714643 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130921 + ... + 1434730.

It is an arithmetic number, because the mean of its divisors is an integer number (77008942098).

Almost surely, 2^{1020655715155} is an apocalyptic number.

1020655715155 is a deficient number, since it is larger than the sum of its proper divisors (211487358413).

1020655715155 is a wasteful number, since it uses less digits than its factorization.

1020655715155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566438.

The product of its (nonzero) digits is 262500, while the sum is 43.

The spelling of 1020655715155 in words is "one trillion, twenty billion, six hundred fifty-five million, seven hundred fifteen thousand, one hundred fifty-five".