61972814450 has 12 divisors (see below), whose sum is σ = 115269434970. Its totient is φ = 24789125760.

The previous prime is 61972814437. The next prime is 61972814471. The reversal of 61972814450 is 5441827916.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 50668659409 + 11304155041 = 225097^2 + 106321^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61972814395 and 61972814404.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 619728095 + ... + 619728194.

Almost surely, 2^61972814450 is an apocalyptic number.

61972814450 is a deficient number, since it is larger than the sum of its proper divisors (53296620520).

61972814450 is a wasteful number, since it uses less digits than its factorization.

61972814450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239456301 (or 1239456296 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 61972814450 in words is "sixty-one billion, nine hundred seventy-two million, eight hundred fourteen thousand, four hundred fifty".