62427718381 has 6 divisors (see below), whose sum is σ = 72619998990. Its totient is φ = 53509472856.

The previous prime is 62427718361. The next prime is 62427718399. The reversal of 62427718381 is 18381772426.

It can be written as a sum of positive squares in only one way, i.e., 47128502281 + 15299216100 = 217091^2 + 123690^2 .

It is not a de Polignac number, because 62427718381 - 2¹⁵ = 62427685613 is a prime.

It is a super-2 number, since 2×62427718381² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 1274035069 = 62427718381 / (6 + 2 + 4 + 2 + 7 + 7 + 1 + 8 + 3 + 8 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (62427718351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 637017486 + ... + 637017583.

It is an arithmetic number, because the mean of its divisors is an integer number (12103333165).

Almost surely, 2^62427718381 is an apocalyptic number.

It is an amenable number.

62427718381 is a deficient number, since it is larger than the sum of its proper divisors (10192280609).

62427718381 is a wasteful number, since it uses less digits than its factorization.

62427718381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274035083 (or 1274035076 counting only the distinct ones).

The product of its digits is 903168, while the sum is 49.

The spelling of 62427718381 in words is "sixty-two billion, four hundred twenty-seven million, seven hundred eighteen thousand, three hundred eighty-one".