30377450640 has 80 divisors (see below), whose sum is σ = 94467400128. Its totient is φ = 8075079168.

The previous prime is 30377450617. The next prime is 30377450647. The reversal of 30377450640 is 4605477303.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (30377450647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123562 + ... + 275721.

Almost surely, 2^30377450640 is an apocalyptic number.

30377450640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30377450640 is an abundant number, since it is smaller than the sum of its proper divisors (64089949488).

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

30377450640 is a wasteful number, since it uses less digits than its factorization.

30377450640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399616 (or 399610 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 39.

The spelling of 30377450640 in words is "thirty billion, three hundred seventy-seven million, four hundred fifty thousand, six hundred forty".