61401306062431 has 4 divisors (see below), whose sum is σ = 62898898893264. Its totient is φ = 59903713231600.

The previous prime is 61401306062423. The next prime is 61401306062533. The reversal of 61401306062431 is 13426060310416.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61401306062431 - 2³ = 61401306062423 is a prime.

It is a super-2 number, since 2×61401306062431² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61401306066431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 748796415355 + ... + 748796415436.

It is an arithmetic number, because the mean of its divisors is an integer number (15724724723316).

Almost surely, 2^{61401306062431} is an apocalyptic number.

61401306062431 is a deficient number, since it is larger than the sum of its proper divisors (1497592830833).

61401306062431 is a wasteful number, since it uses less digits than its factorization.

61401306062431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497592830832.

The product of its (nonzero) digits is 62208, while the sum is 37.

Adding to 61401306062431 its reverse (13426060310416), we get a palindrome (74827366372847).

The spelling of 61401306062431 in words is "sixty-one trillion, four hundred one billion, three hundred six million, sixty-two thousand, four hundred thirty-one".