74642404306531 has 2 divisors, whose sum is σ = 74642404306532. Its totient is φ = 74642404306530.

The previous prime is 74642404306523. The next prime is 74642404306543. The reversal of 74642404306531 is 13560340424647.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74642404306531 - 2³ = 74642404306523 is a prime.

It is a super-2 number, since 2×74642404306531² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74642404306031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37321202153265 + 37321202153266.

It is an arithmetic number, because the mean of its divisors is an integer number (37321202153266).

Almost surely, 2^{74642404306531} is an apocalyptic number.

74642404306531 is a deficient number, since it is larger than the sum of its proper divisors (1).

74642404306531 is an equidigital number, since it uses as much as digits as its factorization.

74642404306531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5806080, while the sum is 49.

The spelling of 74642404306531 in words is "seventy-four trillion, six hundred forty-two billion, four hundred four million, three hundred six thousand, five hundred thirty-one".