61926865078 has 64 divisors (see below), whose sum is σ = 103638528000. Its totient is φ = 27572400000.

The previous prime is 61926865051. The next prime is 61926865103. The reversal of 61926865078 is 87056862916.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30977923 + ... + 30979921.

It is an arithmetic number, because the mean of its divisors is an integer number (1619352000).

Almost surely, 2^61926865078 is an apocalyptic number.

61926865078 is a deficient number, since it is larger than the sum of its proper divisors (41711662922).

61926865078 is a wasteful number, since it uses less digits than its factorization.

61926865078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2413.

The product of its (nonzero) digits is 8709120, while the sum is 58.

The spelling of 61926865078 in words is "sixty-one billion, nine hundred twenty-six million, eight hundred sixty-five thousand, seventy-eight".