61155633342 has 16 divisors (see below), whose sum is σ = 122951642112. Its totient is φ = 20278481880.

The previous prime is 61155633337. The next prime is 61155633353. The reversal of 61155633342 is 24333655116.

It is a super-2 number, since 2×61155633342² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61155633342.

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, 26681068 + ... + 26683359.

It is an arithmetic number, because the mean of its divisors is an integer number (7684477632).

Almost surely, 2^61155633342 is an apocalyptic number.

61155633342 is an abundant number, since it is smaller than the sum of its proper divisors (61796008770).

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

61155633342 is a wasteful number, since it uses less digits than its factorization.

61155633342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53364623.

The product of its digits is 194400, while the sum is 39.

The spelling of 61155633342 in words is "sixty-one billion, one hundred fifty-five million, six hundred thirty-three thousand, three hundred forty-two".