61367578471 has 2 divisors, whose sum is σ = 61367578472. Its totient is φ = 61367578470.

The previous prime is 61367578457. The next prime is 61367578541. The reversal of 61367578471 is 17487576316.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61367578471 - 2²¹ = 61365481319 is a prime.

It is a super-3 number, since 3×61367578471³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61367570471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30683789235 + 30683789236.

It is an arithmetic number, because the mean of its divisors is an integer number (30683789236).

Almost surely, 2^61367578471 is an apocalyptic number.

61367578471 is a deficient number, since it is larger than the sum of its proper divisors (1).

61367578471 is an equidigital number, since it uses as much as digits as its factorization.

61367578471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5927040, while the sum is 55.

The spelling of 61367578471 in words is "sixty-one billion, three hundred sixty-seven million, five hundred seventy-eight thousand, four hundred seventy-one".