72619998990 has 256 divisors, whose sum is σ = 229312512000. Its totient is φ = 14259317760.

The previous prime is 72619998973. The next prime is 72619999021. The reversal of 72619998990 is 9989991627.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 19265826 + ... + 19269594.

It is an arithmetic number, because the mean of its divisors is an integer number (895752000).

Almost surely, 2^72619998990 is an apocalyptic number.

72619998990 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 72619998990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114656256000).

72619998990 is an abundant number, since it is smaller than the sum of its proper divisors (156692513010).

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

72619998990 is a wasteful number, since it uses less digits than its factorization.

72619998990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4255.

The product of its (nonzero) digits is 39680928, while the sum is 69.

The spelling of 72619998990 in words is "seventy-two billion, six hundred nineteen million, nine hundred ninety-eight thousand, nine hundred ninety".