7402653540 has 72 divisors (see below), whose sum is σ = 22461985728. Its totient is φ = 1973401920.

The previous prime is 7402653539. The next prime is 7402653541. The reversal of 7402653540 is 453562047.

7402653540 is a `hidden beast` number, since 7 + 40 + 26 + 53 + 540 = 666.

It is an interprime number because it is at equal distance from previous prime (7402653539) and next prime (7402653541).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 7402653495 and 7402653504.

It is not an unprimeable number, because it can be changed into a prime (7402653541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 872559 + ... + 881001.

It is an arithmetic number, because the mean of its divisors is an integer number (311972024).

Almost surely, 2^7402653540 is an apocalyptic number.

It is an amenable number.

7402653540 is an abundant number, since it is smaller than the sum of its proper divisors (15059332188).

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

7402653540 is a wasteful number, since it uses less digits than its factorization.

7402653540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13329 (or 13324 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 36.

The square root of 7402653540 is about 86038.6746759851. The cubic root of 7402653540 is about 1948.9280577892.

The spelling of 7402653540 in words is "seven billion, four hundred two million, six hundred fifty-three thousand, five hundred forty".