61534510150431 has 32 divisors (see below), whose sum is σ = 85374208604160. Its totient is φ = 39380691484800.

The previous prime is 61534510150417. The next prime is 61534510150507. The reversal of 61534510150431 is 13405101543516.

It is not a de Polignac number, because 61534510150431 - 2³¹ = 61532362666783 is a prime.

It is a super-2 number, since 2×61534510150431² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61534510150431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61534510150931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13251481 + ... + 17282093.

It is an arithmetic number, because the mean of its divisors is an integer number (2667944018880).

Almost surely, 2^{61534510150431} is an apocalyptic number.

61534510150431 is a deficient number, since it is larger than the sum of its proper divisors (23839698453729).

61534510150431 is a wasteful number, since it uses less digits than its factorization.

61534510150431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4031967.

The product of its (nonzero) digits is 108000, while the sum is 39.

Adding to 61534510150431 its reverse (13405101543516), we get a palindrome (74939611693947).

The spelling of 61534510150431 in words is "sixty-one trillion, five hundred thirty-four billion, five hundred ten million, one hundred fifty thousand, four hundred thirty-one".