7276451664 has 20 divisors (see below), whose sum is σ = 18797500256. Its totient is φ = 2425483872.

The previous prime is 7276451629. The next prime is 7276451669. The reversal of 7276451664 is 4661546727.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 151592743 = 7276451664 / (7 + 2 + 7 + 6 + 4 + 5 + 1 + 6 + 6 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7276451669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75796324 + ... + 75796419.

Almost surely, 2^7276451664 is an apocalyptic number.

It is an amenable number.

7276451664 is an abundant number, since it is smaller than the sum of its proper divisors (11521048592).

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

7276451664 is a wasteful number, since it uses less digits than its factorization.

7276451664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151592754 (or 151592748 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 48.

The square root of 7276451664 is about 85302.1199267638. The cubic root of 7276451664 is about 1937.7892825028.

The spelling of 7276451664 in words is "seven billion, two hundred seventy-six million, four hundred fifty-one thousand, six hundred sixty-four".