61551512034 has 16 divisors (see below), whose sum is σ = 123387331872. Its totient is φ = 20469786048.

The previous prime is 61551512021. The next prime is 61551512069. The reversal of 61551512034 is 43021515516.

It is a junction number, because it is equal to n+sod(n) for n = 61551511986 and 61551512004.

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, 11843344 + ... + 11848539.

It is an arithmetic number, because the mean of its divisors is an integer number (7711708242).

Almost surely, 2^61551512034 is an apocalyptic number.

61551512034 is an abundant number, since it is smaller than the sum of its proper divisors (61835819838).

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

61551512034 is a wasteful number, since it uses less digits than its factorization.

61551512034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23692321.

The product of its (nonzero) digits is 18000, while the sum is 33.

The spelling of 61551512034 in words is "sixty-one billion, five hundred fifty-one million, five hundred twelve thousand, thirty-four".