73987294990 has 32 divisors (see below), whose sum is σ = 152215464384. Its totient is φ = 25364901120.

The previous prime is 73987294987. The next prime is 73987294993. The reversal of 73987294990 is 9949278937.

It is an interprime number because it is at equal distance from previous prime (73987294987) and next prime (73987294993).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73987294993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 926322 + ... + 1003018.

It is an arithmetic number, because the mean of its divisors is an integer number (4756733262).

Almost surely, 2^73987294990 is an apocalyptic number.

73987294990 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

73987294990 is an abundant number, since it is smaller than the sum of its proper divisors (78228169394).

73987294990 is a wasteful number, since it uses less digits than its factorization.

73987294990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90492.

The product of its (nonzero) digits is 61725888, while the sum is 67.

The spelling of 73987294990 in words is "seventy-three billion, nine hundred eighty-seven million, two hundred ninety-four thousand, nine hundred ninety".