611963838021 has 8 divisors (see below), whose sum is σ = 816408395424. Its totient is φ = 407747586320.

The previous prime is 611963838011. The next prime is 611963838023. The reversal of 611963838021 is 120838369116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 611963838021 - 2¹⁰ = 611963836997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611963838023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57070170 + ... + 57080891.

It is an arithmetic number, because the mean of its divisors is an integer number (102051049428).

Almost surely, 2^611963838021 is an apocalyptic number.

It is an amenable number.

611963838021 is a deficient number, since it is larger than the sum of its proper divisors (204444557403).

611963838021 is a wasteful number, since it uses less digits than its factorization.

611963838021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114152851.

The product of its (nonzero) digits is 373248, while the sum is 48.

The spelling of 611963838021 in words is "six hundred eleven billion, nine hundred sixty-three million, eight hundred thirty-eight thousand, twenty-one".