61526477640042 has 24 divisors (see below), whose sum is σ = 133309992659844. Its totient is φ = 20508422120064.

The previous prime is 61526477640029. The next prime is 61526477640091. The reversal of 61526477640042 is 24004677462516.

61526477640042 is a `hidden beast` number, since 6 + 1 + 526 + 4 + 7 + 76 + 4 + 0 + 0 + 42 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 58615116914601 + 2911360725441 = 7656051^2 + 1706271^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32706253 + ... + 34536240.

Almost surely, 2^{61526477640042} is an apocalyptic number.

61526477640042 is an abundant number, since it is smaller than the sum of its proper divisors (71783515019802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61526477640042 is a wasteful number, since it uses less digits than its factorization.

61526477640042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67293334 (or 67293331 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 54.

The spelling of 61526477640042 in words is "sixty-one trillion, five hundred twenty-six billion, four hundred seventy-seven million, six hundred forty thousand, forty-two".