2155512611342 has 16 divisors (see below), whose sum is σ = 3348096550272. Its totient is φ = 1039699774560.

The previous prime is 2155512611321. The next prime is 2155512611359. The reversal of 2155512611342 is 2431162155512.

It is a junction number, because it is equal to n+sod(n) for n = 2155512611296 and 2155512611305.

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, 54816833 + ... + 54856140.

It is an arithmetic number, because the mean of its divisors is an integer number (209256034392).

Almost surely, 2^{2155512611342} is an apocalyptic number.

2155512611342 is a deficient number, since it is larger than the sum of its proper divisors (1192583938930).

2155512611342 is a wasteful number, since it uses less digits than its factorization.

2155512611342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109673323.

The product of its digits is 72000, while the sum is 38.

Adding to 2155512611342 its reverse (2431162155512), we get a palindrome (4586674766854).

The spelling of 2155512611342 in words is "two trillion, one hundred fifty-five billion, five hundred twelve million, six hundred eleven thousand, three hundred forty-two".