621622023654 has 16 divisors (see below), whose sum is σ = 1243437565248. Its totient is φ = 207175088232.

The previous prime is 621622023653. The next prime is 621622023683. The reversal of 621622023654 is 456320226126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621622023653) 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, 8021472 + ... + 8098595.

It is an arithmetic number, because the mean of its divisors is an integer number (77714847828).

Almost surely, 2^621622023654 is an apocalyptic number.

621622023654 is an abundant number, since it is smaller than the sum of its proper divisors (621815541594).

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

621622023654 is a wasteful number, since it uses less digits than its factorization.

621622023654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16126499.

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 621622023654 in words is "six hundred twenty-one billion, six hundred twenty-two million, twenty-three thousand, six hundred fifty-four".