1591409022440 has 32 divisors (see below), whose sum is σ = 3623810914080. Its totient is φ = 628894166592.

The previous prime is 1591409022431. The next prime is 1591409022451. The reversal of 1591409022440 is 442209041951.

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, 239666714 + ... + 239673353.

It is an arithmetic number, because the mean of its divisors is an integer number (113244091065).

Almost surely, 2^{1591409022440} is an apocalyptic number.

1591409022440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1591409022440 is an abundant number, since it is smaller than the sum of its proper divisors (2032401891640).

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

1591409022440 is a wasteful number, since it uses less digits than its factorization.

1591409022440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479340161 (or 479340157 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 1591409022440 in words is "one trillion, five hundred ninety-one billion, four hundred nine million, twenty-two thousand, four hundred forty".