61506926208 has 960 divisors, whose sum is σ = 234404200800. Its totient is φ = 15864532992.

The previous prime is 61506926207. The next prime is 61506926213. The reversal of 61506926208 is 80262960516.

61506926208 is a `hidden beast` number, since 6 + 15 + 0 + 6 + 9 + 2 + 620 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (61506926203) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 442495803 + ... + 442495941.

Almost surely, 2^61506926208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61506926208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117202100400).

61506926208 is an abundant number, since it is smaller than the sum of its proper divisors (172897274592).

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

61506926208 is a wasteful number, since it uses less digits than its factorization.

61506926208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 61506926208 in words is "sixty-one billion, five hundred six million, nine hundred twenty-six thousand, two hundred eight".