61077858036157 has 8 divisors (see below), whose sum is σ = 61299343244376. Its totient is φ = 60856379932992.

The previous prime is 61077858036119. The next prime is 61077858036229. The reversal of 61077858036157 is 75163085877016.

It can be written as a sum of positive squares in 4 ways, for example, as 38229563196036 + 22848294840121 = 6183006^2 + 4779989^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61077858036157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61077858006157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15761043 + ... + 19250095.

It is an arithmetic number, because the mean of its divisors is an integer number (7662417905547).

Almost surely, 2^{61077858036157} is an apocalyptic number.

It is an amenable number.

61077858036157 is a deficient number, since it is larger than the sum of its proper divisors (221485208219).

61077858036157 is a wasteful number, since it uses less digits than its factorization.

61077858036157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3552527.

The product of its (nonzero) digits is 59270400, while the sum is 64.

The spelling of 61077858036157 in words is "sixty-one trillion, seventy-seven billion, eight hundred fifty-eight million, thirty-six thousand, one hundred fifty-seven".