61376523451 has 16 divisors (see below), whose sum is σ = 62826230880. Its totient is φ = 59946515200.

The previous prime is 61376523433. The next prime is 61376523463. The reversal of 61376523451 is 15432567316.

It is a cyclic number.

It is not a de Polignac number, because 61376523451 - 2²¹ = 61374426299 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61376523398 and 61376523407.

It is not an unprimeable number, because it can be changed into a prime (61376523401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3974421 + ... + 3989833.

It is an arithmetic number, because the mean of its divisors is an integer number (3926639430).

Almost surely, 2^61376523451 is an apocalyptic number.

61376523451 is a deficient number, since it is larger than the sum of its proper divisors (1449707429).

61376523451 is a wasteful number, since it uses less digits than its factorization.

61376523451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16046.

The product of its digits is 453600, while the sum is 43.

The spelling of 61376523451 in words is "sixty-one billion, three hundred seventy-six million, five hundred twenty-three thousand, four hundred fifty-one".