152761187421 has 12 divisors (see below), whose sum is σ = 224272345180. Its totient is φ = 100171270080.

The previous prime is 152761187419. The next prime is 152761187429. The reversal of 152761187421 is 124781167251.

152761187421 is a `hidden beast` number, since 1 + 5 + 2 + 7 + 611 + 8 + 7 + 4 + 21 = 666.

152761187421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 30002050521 + 122759136900 = 173211^2 + 350370^2 .

It is not a de Polignac number, because 152761187421 - 2¹ = 152761187419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152761187429) by changing a digit.

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, 139126216 + ... + 139127313.

Almost surely, 2^152761187421 is an apocalyptic number.

It is an amenable number.

152761187421 is a deficient number, since it is larger than the sum of its proper divisors (71511157759).

152761187421 is a wasteful number, since it uses less digits than its factorization.

152761187421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278253596 (or 278253593 counting only the distinct ones).

The product of its digits is 188160, while the sum is 45.

The spelling of 152761187421 in words is "one hundred fifty-two billion, seven hundred sixty-one million, one hundred eighty-seven thousand, four hundred twenty-one".