7640501553 has 16 divisors (see below), whose sum is σ = 11320646400. Its totient is φ = 5093044560.

The previous prime is 7640501551. The next prime is 7640501567. The reversal of 7640501553 is 3551050467.

7640501553 is a `hidden beast` number, since 7 + 640 + 5 + 0 + 1 + 5 + 5 + 3 = 666.

It is not a de Polignac number, because 7640501553 - 2¹ = 7640501551 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (7640501551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 346488 + ... + 367878.

It is an arithmetic number, because the mean of its divisors is an integer number (707540400).

Almost surely, 2^7640501553 is an apocalyptic number.

It is an amenable number.

7640501553 is a deficient number, since it is larger than the sum of its proper divisors (3680144847).

7640501553 is a wasteful number, since it uses less digits than its factorization.

7640501553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34629 (or 34623 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 7640501553 is about 87409.9625500435. The cubic root of 7640501553 is about 1969.5814989631.

The spelling of 7640501553 in words is "seven billion, six hundred forty million, five hundred one thousand, five hundred fifty-three".