61229940245152 has 72 divisors (see below), whose sum is σ = 140744942694720. Its totient is φ = 26144571035520.

The previous prime is 61229940245141. The next prime is 61229940245209. The reversal of 61229940245152 is 25154204992216.

It is a self number, because there is not a number n which added to its sum of digits gives 61229940245152.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71622502 + ... + 72472357.

It is an arithmetic number, because the mean of its divisors is an integer number (1954790870760).

Almost surely, 2^{61229940245152} is an apocalyptic number.

It is an amenable number.

61229940245152 is an abundant number, since it is smaller than the sum of its proper divisors (79515002449568).

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

61229940245152 is a wasteful number, since it uses less digits than its factorization.

61229940245152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144095154 (or 144095139 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 52.

The spelling of 61229940245152 in words is "sixty-one trillion, two hundred twenty-nine billion, nine hundred forty million, two hundred forty-five thousand, one hundred fifty-two".