40261156464 has 40 divisors (see below), whose sum is σ = 104176090240. Its totient is φ = 13398694848.

The previous prime is 40261156447. The next prime is 40261156469. The reversal of 40261156464 is 46465116204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40261156469) 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 7 ways as a sum of consecutive naturals, for example, 647812 + ... + 707235.

It is an arithmetic number, because the mean of its divisors is an integer number (2604402256).

Almost surely, 2^40261156464 is an apocalyptic number.

It is an amenable number.

40261156464 is an abundant number, since it is smaller than the sum of its proper divisors (63914933776).

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

40261156464 is a wasteful number, since it uses less digits than its factorization.

40261156464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355677 (or 1355671 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 40261156464 in words is "forty billion, two hundred sixty-one million, one hundred fifty-six thousand, four hundred sixty-four".