2151644387460 has 48 divisors (see below), whose sum is σ = 6126716232000. Its totient is φ = 564046889344.

The previous prime is 2151644387449. The next prime is 2151644387461. The reversal of 2151644387460 is 647834461512.

It is not an unprimeable number, because it can be changed into a prime (2151644387461) 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, 303901035 + ... + 303908114.

It is an arithmetic number, because the mean of its divisors is an integer number (127639921500).

Almost surely, 2^{2151644387460} is an apocalyptic number.

2151644387460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2151644387460 is an abundant number, since it is smaller than the sum of its proper divisors (3975071844540).

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

2151644387460 is a wasteful number, since it uses less digits than its factorization.

2151644387460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607809220 (or 607809218 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 51.

The spelling of 2151644387460 in words is "two trillion, one hundred fifty-one billion, six hundred forty-four million, three hundred eighty-seven thousand, four hundred sixty".