61629335545 has 32 divisors (see below), whose sum is σ = 75533036544. Its totient is φ = 48264216000.

The previous prime is 61629335539. The next prime is 61629335591. The reversal of 61629335545 is 54553392616.

It is not a de Polignac number, because 61629335545 - 2²⁵ = 61595781113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30767514 + ... + 30769516.

It is an arithmetic number, because the mean of its divisors is an integer number (2360407392).

Almost surely, 2^61629335545 is an apocalyptic number.

It is an amenable number.

61629335545 is a deficient number, since it is larger than the sum of its proper divisors (13903700999).

61629335545 is a wasteful number, since it uses less digits than its factorization.

61629335545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2733.

The product of its digits is 2916000, while the sum is 49.

The spelling of 61629335545 in words is "sixty-one billion, six hundred twenty-nine million, three hundred thirty-five thousand, five hundred forty-five".