6921625435051 has 4 divisors (see below), whose sum is σ = 7285921510600. Its totient is φ = 6557329359504.

The previous prime is 6921625435003. The next prime is 6921625435079. The reversal of 6921625435051 is 1505345261296.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6921625435051 - 2¹⁷ = 6921625303979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6921625434986 and 6921625435004.

It is not an unprimeable number, because it can be changed into a prime (6921625535051) 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, 182148037746 + ... + 182148037783.

It is an arithmetic number, because the mean of its divisors is an integer number (1821480377650).

Almost surely, 2^{6921625435051} is an apocalyptic number.

6921625435051 is a deficient number, since it is larger than the sum of its proper divisors (364296075549).

6921625435051 is a wasteful number, since it uses less digits than its factorization.

6921625435051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364296075548.

The product of its (nonzero) digits is 1944000, while the sum is 49.

The spelling of 6921625435051 in words is "six trillion, nine hundred twenty-one billion, six hundred twenty-five million, four hundred thirty-five thousand, fifty-one".