61435256603 has 12 divisors (see below), whose sum is σ = 71671474872. Its totient is φ = 52507022400.

The previous prime is 61435256579. The next prime is 61435256627. The reversal of 61435256603 is 30665253416.

It is an interprime number because it is at equal distance from previous prime (61435256579) and next prime (61435256627).

It is not a de Polignac number, because 61435256603 - 2³⁴ = 44255387419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61435256633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1789598 + ... + 1823603.

It is an arithmetic number, because the mean of its divisors is an integer number (5972622906).

Almost surely, 2^61435256603 is an apocalyptic number.

61435256603 is a deficient number, since it is larger than the sum of its proper divisors (10236218269).

61435256603 is a wasteful number, since it uses less digits than its factorization.

61435256603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3613562 (or 3613555 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 61435256603 in words is "sixty-one billion, four hundred thirty-five million, two hundred fifty-six thousand, six hundred three".