291903364140 has 24 divisors (see below), whose sum is σ = 817329419760. Its totient is φ = 77840897088.

The previous prime is 291903364139. The next prime is 291903364157. The reversal of 291903364140 is 41463309192.

It is a junction number, because it is equal to n+sod(n) for n = 291903364092 and 291903364101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2432527975 + ... + 2432528094.

It is an arithmetic number, because the mean of its divisors is an integer number (34055392490).

Almost surely, 2^291903364140 is an apocalyptic number.

291903364140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

291903364140 is an abundant number, since it is smaller than the sum of its proper divisors (525426055620).

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

291903364140 is a wasteful number, since it uses less digits than its factorization.

291903364140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4865056081 (or 4865056079 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 42.

The spelling of 291903364140 in words is "two hundred ninety-one billion, nine hundred three million, three hundred sixty-four thousand, one hundred forty".