621240070971 has 8 divisors (see below), whose sum is σ = 892037025040. Its totient is φ = 382301582112.

The previous prime is 621240070943. The next prime is 621240070991. The reversal of 621240070971 is 179070042126.

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

It is not a de Polignac number, because 621240070971 - 2⁹ = 621240070459 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 15929232589 = 621240070971 / (6 + 2 + 1 + 2 + 4 + 0 + 0 + 7 + 0 + 9 + 7 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (621240070921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7964616256 + ... + 7964616333.

It is an arithmetic number, because the mean of its divisors is an integer number (111504628130).

Almost surely, 2^621240070971 is an apocalyptic number.

621240070971 is a deficient number, since it is larger than the sum of its proper divisors (270796954069).

621240070971 is a wasteful number, since it uses less digits than its factorization.

621240070971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15929232605.

The product of its (nonzero) digits is 42336, while the sum is 39.

The spelling of 621240070971 in words is "six hundred twenty-one billion, two hundred forty million, seventy thousand, nine hundred seventy-one".