40764081951 has 20 divisors (see below), whose sum is σ = 61137130824. Its totient is φ = 27067770000.

The previous prime is 40764081889. The next prime is 40764081961. The reversal of 40764081951 is 15918046704.

It is not a de Polignac number, because 40764081951 - 2⁶ = 40764081887 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40764081897 and 40764081906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40764081961) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 982180 + ... + 1022841.

Almost surely, 2^40764081951 is an apocalyptic number.

40764081951 is a deficient number, since it is larger than the sum of its proper divisors (20373048873).

40764081951 is a wasteful number, since it uses less digits than its factorization.

40764081951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005284 (or 2005275 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 40764081951 in words is "forty billion, seven hundred sixty-four million, eighty-one thousand, nine hundred fifty-one".