7651200921 has 16 divisors (see below), whose sum is σ = 12555817344. Its totient is φ = 4035798144.

The previous prime is 7651200917. The next prime is 7651200941. The reversal of 7651200921 is 1290021567.

It is not a de Polignac number, because 7651200921 - 2² = 7651200917 is a prime.

It is a super-2 number, since 2×7651200921² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7651200941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14012916 + ... + 14013461.

It is an arithmetic number, because the mean of its divisors is an integer number (784738584).

Almost surely, 2^7651200921 is an apocalyptic number.

It is an amenable number.

7651200921 is a deficient number, since it is larger than the sum of its proper divisors (4904616423).

7651200921 is a wasteful number, since it uses less digits than its factorization.

7651200921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28026400.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 7651200921 is about 87471.1433616824. The cubic root of 7651200921 is about 1970.5004372516.

The spelling of 7651200921 in words is "seven billion, six hundred fifty-one million, two hundred thousand, nine hundred twenty-one".