1252158196464 has 60 divisors (see below), whose sum is σ = 4004918679216. Its totient is φ = 357759484416.

The previous prime is 1252158196441. The next prime is 1252158196543. The reversal of 1252158196464 is 4646918512521.

It is a happy number.

1252158196464 is a `hidden beast` number, since 1 + 2 + 5 + 2 + 15 + 81 + 96 + 464 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1252158196464.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 621109209 + ... + 621111224.

Almost surely, 2^{1252158196464} is an apocalyptic number.

1252158196464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1252158196464 is an abundant number, since it is smaller than the sum of its proper divisors (2752760482752).

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

1252158196464 is a wasteful number, since it uses less digits than its factorization.

1252158196464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242220454 (or 1242220445 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 54.

The spelling of 1252158196464 in words is "one trillion, two hundred fifty-two billion, one hundred fifty-eight million, one hundred ninety-six thousand, four hundred sixty-four".