40691216960 has 28 divisors (see below), whose sum is σ = 96895961148. Its totient is φ = 16276486656.

The previous prime is 40691216957. The next prime is 40691217013. The reversal of 40691216960 is 6961219604.

It can be written as a sum of positive squares in 2 ways, for example, as 31723884544 + 8967332416 = 178112^2 + 94696^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63579707 + ... + 63580346.

It is an arithmetic number, because the mean of its divisors is an integer number (3460570041).

Almost surely, 2^40691216960 is an apocalyptic number.

40691216960 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40691216960 is an abundant number, since it is smaller than the sum of its proper divisors (56204744188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40691216960 is a wasteful number, since it uses less digits than its factorization.

40691216960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127160070 (or 127160060 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 40691216960 in words is "forty billion, six hundred ninety-one million, two hundred sixteen thousand, nine hundred sixty".