6972421641 has 16 divisors (see below), whose sum is σ = 9751042176. Its totient is φ = 4423136256.

The previous prime is 6972421609. The next prime is 6972421649. The reversal of 6972421641 is 1461242796.

It is not a de Polignac number, because 6972421641 - 2⁵ = 6972421609 is a prime.

It is a super-2 number, since 2×6972421641² = 97229327079770265762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6972421593 and 6972421602.

It is not an unprimeable number, because it can be changed into a prime (6972421649) 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, 248470 + ... + 275103.

It is an arithmetic number, because the mean of its divisors is an integer number (609440136).

Almost surely, 2^6972421641 is an apocalyptic number.

It is an amenable number.

6972421641 is a deficient number, since it is larger than the sum of its proper divisors (2778620535).

6972421641 is a wasteful number, since it uses less digits than its factorization.

6972421641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523792.

The product of its digits is 145152, while the sum is 42.

The square root of 6972421641 is about 83501.0277840938. The cubic root of 6972421641 is about 1910.4157096115.

The spelling of 6972421641 in words is "six billion, nine hundred seventy-two million, four hundred twenty-one thousand, six hundred forty-one".