61029263864 has 16 divisors (see below), whose sum is σ = 115499309400. Its totient is φ = 30229448032.

The previous prime is 61029263863. The next prime is 61029263881. The reversal of 61029263864 is 46836292016.

61029263864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61029263863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35647079 + ... + 35648790.

Almost surely, 2^61029263864 is an apocalyptic number.

It is an amenable number.

61029263864 is a deficient number, since it is larger than the sum of its proper divisors (54470045536).

61029263864 is a wasteful number, since it uses less digits than its factorization.

61029263864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71295982 (or 71295978 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 61029263864 in words is "sixty-one billion, twenty-nine million, two hundred sixty-three thousand, eight hundred sixty-four".