61504476429 has 16 divisors (see below), whose sum is σ = 90061473600. Its totient is φ = 37025266560.

The previous prime is 61504476379. The next prime is 61504476457. The reversal of 61504476429 is 92467440516.

It is a happy number.

It is not a de Polignac number, because 61504476429 - 2¹³ = 61504468237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61504476499) 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, 6249352 + ... + 6259185.

It is an arithmetic number, because the mean of its divisors is an integer number (5628842100).

Almost surely, 2^61504476429 is an apocalyptic number.

It is an amenable number.

61504476429 is a deficient number, since it is larger than the sum of its proper divisors (28556997171).

61504476429 is a wasteful number, since it uses less digits than its factorization.

61504476429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12508700.

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 61504476429 in words is "sixty-one billion, five hundred four million, four hundred seventy-six thousand, four hundred twenty-nine".