61571340266254 has 64 divisors (see below), whose sum is σ = 116925777505152. Its totient is φ = 23665192243200.

The previous prime is 61571340266239. The next prime is 61571340266263. The reversal of 61571340266254 is 45266204317516.

It is a super-2 number, since 2×61571340266254² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 15320577 + ... + 18917260.

It is an arithmetic number, because the mean of its divisors is an integer number (1826965273518).

Almost surely, 2^{61571340266254} is an apocalyptic number.

61571340266254 is a deficient number, since it is larger than the sum of its proper divisors (55354437238898).

61571340266254 is a wasteful number, since it uses less digits than its factorization.

61571340266254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34238141.

The product of its (nonzero) digits is 7257600, while the sum is 52.

The spelling of 61571340266254 in words is "sixty-one trillion, five hundred seventy-one billion, three hundred forty million, two hundred sixty-six thousand, two hundred fifty-four".