621252367477 has 16 divisors (see below), whose sum is σ = 740919951360. Its totient is φ = 509317067952.

The previous prime is 621252367471. The next prime is 621252367553. The reversal of 621252367477 is 774763252126.

It is not a de Polignac number, because 621252367477 - 2³ = 621252367469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621252367471) 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, 2573674 + ... + 2804692.

It is an arithmetic number, because the mean of its divisors is an integer number (46307496960).

Almost surely, 2^621252367477 is an apocalyptic number.

It is an amenable number.

621252367477 is a deficient number, since it is larger than the sum of its proper divisors (119667583883).

621252367477 is a wasteful number, since it uses less digits than its factorization.

621252367477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247752.

The product of its digits is 5927040, while the sum is 52.

The spelling of 621252367477 in words is "six hundred twenty-one billion, two hundred fifty-two million, three hundred sixty-seven thousand, four hundred seventy-seven".