21007298151 has 24 divisors (see below), whose sum is σ = 35022078624. Its totient is φ = 11885313600.

The previous prime is 21007298141. The next prime is 21007298171. The reversal of 21007298151 is 15189270012.

It is a happy number.

21007298151 is a `hidden beast` number, since 210 + 0 + 7 + 298 + 151 = 666.

It is not a de Polignac number, because 21007298151 - 2⁹ = 21007297639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21007298141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1644376 + ... + 1657101.

It is an arithmetic number, because the mean of its divisors is an integer number (1459253276).

Almost surely, 2^21007298151 is an apocalyptic number.

21007298151 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21007298151 is a deficient number, since it is larger than the sum of its proper divisors (14014780473).

21007298151 is a wasteful number, since it uses less digits than its factorization.

21007298151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3301591 (or 3301588 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The spelling of 21007298151 in words is "twenty-one billion, seven million, two hundred ninety-eight thousand, one hundred fifty-one".