61620236104 has 32 divisors (see below), whose sum is σ = 132258841920. Its totient is φ = 26365576896.

The previous prime is 61620236101. The next prime is 61620236113. The reversal of 61620236104 is 40163202616.

61620236104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (61620236101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 863194 + ... + 931849.

It is an arithmetic number, because the mean of its divisors is an integer number (4133088810).

Almost surely, 2^61620236104 is an apocalyptic number.

It is an amenable number.

61620236104 is an abundant number, since it is smaller than the sum of its proper divisors (70638605816).

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

61620236104 is a wasteful number, since it uses less digits than its factorization.

61620236104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795669 (or 1795665 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 61620236104 in words is "sixty-one billion, six hundred twenty million, two hundred thirty-six thousand, one hundred four".