61620460158 has 32 divisors (see below), whose sum is σ = 125897254560. Its totient is φ = 20100850560.

The previous prime is 61620460129. The next prime is 61620460177. The reversal of 61620460158 is 85106402616.

It is a happy number.

It is a super-3 number, since 3×61620460158³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355213 + ... + 499416.

It is an arithmetic number, because the mean of its divisors is an integer number (3934289205).

Almost surely, 2^61620460158 is an apocalyptic number.

61620460158 is an abundant number, since it is smaller than the sum of its proper divisors (64276794402).

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

61620460158 is a wasteful number, since it uses less digits than its factorization.

61620460158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854892.

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 61620460158 in words is "sixty-one billion, six hundred twenty million, four hundred sixty thousand, one hundred fifty-eight".