61436256120 has 48 divisors (see below), whose sum is σ = 199667833560. Its totient is φ = 16383001536.

The previous prime is 61436256113. The next prime is 61436256137. The reversal of 61436256120 is 2165263416.

61436256120 is a `hidden beast` number, since 6 + 1 + 4 + 3 + 625 + 6 + 1 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 85327774 + ... + 85328493.

Almost surely, 2^61436256120 is an apocalyptic number.

61436256120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61436256120 is an abundant number, since it is smaller than the sum of its proper divisors (138231577440).

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

61436256120 is a wasteful number, since it uses less digits than its factorization.

61436256120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170656284 (or 170656277 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 61436256120 in words is "sixty-one billion, four hundred thirty-six million, two hundred fifty-six thousand, one hundred twenty".