61551214263 has 48 divisors (see below), whose sum is σ = 111943084032. Its totient is φ = 31658040000.

The previous prime is 61551214177. The next prime is 61551214279. The reversal of 61551214263 is 36241215516.

61551214263 is a `hidden beast` number, since 6 + 1 + 551 + 2 + 1 + 42 + 63 = 666.

It is not a de Polignac number, because 61551214263 - 2⁸ = 61551214007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61551214663) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 369703 + ... + 509688.

It is an arithmetic number, because the mean of its divisors is an integer number (2332147584).

Almost surely, 2^61551214263 is an apocalyptic number.

61551214263 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

61551214263 is a deficient number, since it is larger than the sum of its proper divisors (50391869769).

61551214263 is a wasteful number, since it uses less digits than its factorization.

61551214263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879516 (or 879513 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

Adding to 61551214263 its reverse (36241215516), we get a palindrome (97792429779).

The spelling of 61551214263 in words is "sixty-one billion, five hundred fifty-one million, two hundred fourteen thousand, two hundred sixty-three".