7551456642 has 24 divisors (see below), whose sum is σ = 16670198844. Its totient is φ = 2469658464.

The previous prime is 7551456641. The next prime is 7551456643. The reversal of 7551456642 is 2466541557.

7551456642 is a `hidden beast` number, since 7 + 551 + 4 + 56 + 6 + 42 = 666.

It is an interprime number because it is at equal distance from previous prime (7551456641) and next prime (7551456643).

It can be written as a sum of positive squares in 2 ways, for example, as 7425096561 + 126360081 = 86169^2 + 11241^2 .

It is not an unprimeable number, because it can be changed into a prime (7551456641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3956833 + ... + 3958740.

Almost surely, 2^7551456642 is an apocalyptic number.

7551456642 is an abundant number, since it is smaller than the sum of its proper divisors (9118742202).

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

7551456642 is a wasteful number, since it uses less digits than its factorization.

7551456642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7915634 (or 7915631 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The square root of 7551456642 is about 86899.1176134718. The cubic root of 7551456642 is about 1961.9001981736.

The spelling of 7551456642 in words is "seven billion, five hundred fifty-one million, four hundred fifty-six thousand, six hundred forty-two".