21437470261000 has 32 divisors (see below), whose sum is σ = 50163680413080. Its totient is φ = 8574988104000.

The previous prime is 21437470260979. The next prime is 21437470261037. The reversal of 21437470261000 is 16207473412.

It can be written as a sum of positive squares in 4 ways, for example, as 3320682531076 + 18116787729924 = 1822274^2 + 4256382^2 .

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, 10718734131 + ... + 10718736130.

Almost surely, 2^{21437470261000} is an apocalyptic number.

21437470261000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21437470261000 is an abundant number, since it is smaller than the sum of its proper divisors (28726210152080).

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

21437470261000 is a wasteful number, since it uses less digits than its factorization.

21437470261000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21437470282 (or 21437470268 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The spelling of 21437470261000 in words is "twenty-one trillion, four hundred thirty-seven billion, four hundred seventy million, two hundred sixty-one thousand".