67261564413 has 12 divisors (see below), whose sum is σ = 98988718140. Its totient is φ = 43994985216.

The previous prime is 67261564411. The next prime is 67261564423. The reversal of 67261564413 is 31446516276.

67261564413 is a `hidden beast` number, since 6 + 72 + 6 + 1 + 564 + 4 + 13 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 30872949849 + 36388614564 = 175707^2 + 190758^2 .

It is not a de Polignac number, because 67261564413 - 2¹ = 67261564411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67261564411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70504308 + ... + 70505261.

It is an arithmetic number, because the mean of its divisors is an integer number (8249059845).

Almost surely, 2^67261564413 is an apocalyptic number.

It is an amenable number.

67261564413 is a deficient number, since it is larger than the sum of its proper divisors (31727153727).

67261564413 is a wasteful number, since it uses less digits than its factorization.

67261564413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141009628 (or 141009625 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The spelling of 67261564413 in words is "sixty-seven billion, two hundred sixty-one million, five hundred sixty-four thousand, four hundred thirteen".